Attachment for spark plugs



G. A. sTRAwsER ATTACHMENT FOR SPARK PL/UGS Sept. 25,1923. 1,468,929

Filed Sept. 14. 192':

estate Sept. 25, teas.

entree iaeaeza smearseries.

GEORGE A. STRAWSEB, OF LIVERPOOL, PENNSYLVANIA, ASSIGN OR OF ONE-HALF TO,

DANIEL V]. GOODLING, CFF RICHFIELD, PENNSYLVANIA.

ATTACHMENT FOB sneak PLUGS.

Application filed september '14, mass] Serial No; 588,185.

To all whom it may concern: 7

Be it kne vn that I, Geonen A. STRAWSER, a citizen of the United States, residing at Liverpool, in the county of Perry, State of fennsylvania, have invented certain new and us Zul Improvements in. Attachments for Spark Plugs; and I do hereby declare the following to be a full, cleaigand exact description of the invention, such as will enable others skilled in the art to which it ap-' pertains to make and use thesame.

This invention relates to new and useful improvements in spark plugs for explosive engines, and par icularly electrodes therefor.

"One object or the invention is to provide an electrode which will prevent collection of carbon on the plug, thereby improving the eiiiciency of the sparkin of the plug.

mother object is to provide an electrode n. ght enter the lower end of the plug, and

hold the fuel below the sparking edgeof the electrode. t .ier objects and advantages will be apat from the following description when taucn connection with the accompanying drawing;

In the drawing:

Figure 1 is an elevation ofthe lower por-m tio oi? a spark plug, partly in section, showthe position of the electrode.

r1 ure 2 is a similar view showing the electrode section, and slightly enlarged. Figure 3 is a horizontal sectional view of the plug on the line 3 3 of Figure 1,

showing the electrode in top plan.

-Reterring particularly to the accompanying drawing. 10 represents the metallic shell oi the spark plug, and 11 represents the center electrode. Disposed within the lower end of the shell 10 is a horizontally disposed disk l2 having a central. opening 13 through which the electrode 11 is dispose 1, this latter electrode being so arranged that it is spaced from the wall of the opening. The surrounding wall of the opening 13 extends downwardly from the upper face of the disk to a point closeto the lower face, where it curves abruptly toward the center of the 'n will eiiectively drain any fuel which which enters the shell 10. It will be noted that the groove 16 is disposed at such a distance awayiirorn the opening 13 as to hold the fuel out of the path of the exploding gases, with thc result that clogging or collecting of carbon, on the knife edge 14-, is effectively prevented. The oil remains in the groove 16 during the:compression stroke of the piston of the engine, but is driven out upon the exhaust.

Theknife edge 14 will take place outside of the shell of the spark ping, and within he combustion chainberof the engine. j

It will benoted that the radiatin ooves 15 have their bottoms inclined downwardly ixadiating froin the upper edge of the r insures that the firing I and inwardlyironi the u per outer edge of thegdisk to the wall of the opening 13, thus more readily permitting the shell to be cleaned. by suction, when the engine exhausts.

Whatis claimed is:

ing channels, and capillary means for preventing accumulationrof fuel on said knife e g i 2; A sparking electrode comprising a disk having a central electrode receiving opening the'lower end of which is formed with anin wardly extending knife edge, radiating" downwardly and inwardly inclined channels,

and a channel in'the lower face of the disk surrounding the central opening. I

' 3; A sparking electrode comprising a disk having a central opening formed with an in- V LA sparking electrode cornprisin a. disk having. a central opening with a sparking knife edge at one end of the open ng; *radiat wardly directed knife edgeat one end, downwarclly and inwardly inclined radiating V shapecl channels the walls 01" whlch converge toward the outer periphery and upper face of the clislz, and a circular groove surrounding the lower end of the central opening for drawing oil, by capillary action from the knife edge.

In testimony whereof, I affix my signature,

Witnesses: I

CLARENCE BARNER, A. M. BARNER. 

